单内核计算图 - 2023.2 简体中文

最简单的基本计算图是在类中例化的单个内核，此类派生自含指定输入和输出的 adf::graph 类。

class SimplestGraph: public adf::graph {
private:
  adf::kernel k;

public:
  adf::port<input> din;
  adf::port<output> dout;

SimplestGraph() {
  k = adf::kernel::create(passthrough);
  adf::source(k) = "passthrough.cpp";
  adf::runtime<ratio>(k) = 0.9;
  adf::connect(din, k.in[0]);
  adf::connect(k.out[0], dout);
  dimensions(k.in[0]) = {FRAME_LENGTH};
  dimensions(k.out[0]) = {FRAME_LENGTH};
  };
};

class TestGraph: public adf::graph {
public:
  adf::input_plio plin1;
  adf::output_plio plout1;

  SimplestGraph Simple;

  TestGraph()
  {
    plin1 = adf::input_plio::create("input1",adf::plio_64_bits,"data/Input_64.txt",500);
    adf::connect(plin1.out[0],Simple.din);

    plout1 = adf::output_plio::create("output1",adf::plio_64_bits,"data/Output1.txt",500);
    adf::connect(Simple.dout,plout1.in[0]);
  };
};

测试激励文件程序会例化测试计算图，并调用控制命令来初始化运行并结束此计算图。

#include "graph.h"

TestGraph UnitTest;

int main(int argc, char ** argv) {
  UnitTest.init();
  UnitTest.run(NFRAMES*NITERATIONS);
  UnitTest.end();
  return 0;
}

生成的计算图会显示在 Vitis IDE 中：

图 1. 计算图视图